Not suitable. Fixed income funds are suitable for one-time purchases. There is no need for fixed investment. The fixed investment of the fund will obtain the average return of the fund. It is more suitable for funds with certain fluctuations, such as stock funds, partial stock hybrid funds, etc. Index funds, feeder funds, etc. are all suitable for fixed investments, but bond funds and currency funds are not suitable for fixed investments.

Fund fixed investment is to buy funds at a fixed amount at a specified time. The advantages are: saving time and worry, averaging returns, no need for timing, no stop loss, etc.